Tree path 10 levels King's Pawn Game › King's Knight Opening › Petrov's Defense › Petrov's Defense › Petrov's Defense › Petrov's Defense › Petrov's Defense › Classical Attack › Marshall Variation › Petrov's Defense: Classical Attack, Staunton Variation
C42

Petrov's Defense: Classical Attack, Staunton Variation

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Overview

Petrov's Defense: Classical Attack, Staunton Variation is a variation within the Open Games family, indexed as ECO C42.

The Open Games group covers open games — classical 1.e4 e5 openings where both sides contest the centre directly with pawns.

It is reached after 16 plies of play, with the move sequence 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. O-O O-O 8. c4 c6.

It is a variation of Petrov's Defense: Classical Attack, Marshall Variation, which itself descends from the root opening King's Pawn Game.

It continues primarily into one named line, Petrov's Defense: Classical Attack, Marshall Variation, Chinese Gambit.

Step through the moves on the interactive board below, review the live Lichess statistics, or play this position against Stockfish at one of six difficulty levels.

ECO code
C42
Group
Open Games (C)
Plies
16
Parent
Petrov's Defense: Classical Attack, Marshall Variation
Direct variations
1

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Statistics from Lichess

143,164 games · White 50.3% / Draw 7.6% / Black 42.2%

MovesGamesW / D / B
Nc378,140
cxd521,977
Re120,876
Qc29,658
c55,234
h32,631
Nbd21,964
Qb31,723

Source: Lichess Opening Explorer · cached 2026-09-26 03:10:38

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Variations (1)